AEPC_2024 _18 Facility Sub-Metering

The Consultation Process

The consultation process is outlined below. Dates are indicative only and subject to change.

Procedure Change Proposal

Wholesale Electricity Market Rules – Clause 2.10

Date of Notice: 11 December 2024

Matter under Consultation

AEMO has initiated this Procedure Change Proposal to update WEM Procedure: Facility Sub-Metering to reflect the implementation of the new Wholesale Electricity Market System Market Participant Interface (WEMS MPI) systems functionality, which enables the direct receipt of Facility Sub-Metering data by AEMO’s systems, making the receipt of data via email redundant. Other amendments are also proposed to improve the Procedure’s prescriptive accuracy and update its descriptive accuracy (as indicated below).

The proposed amendments:

• reflect the new WEMS MPI systems functionality, communication requirements and protocols between a Market Participant and AEMO
• update references to the current version of the Metering Code 2012 and its clauses, and to other relevant WEM Procedures;
• clarifies the Facility Sub-Metering requirements in respect of Interval Energy Data collected via a non-SCADA source (that is not Alternating Current Metering) and updates the accuracy requirement;
• insert a requirement on the timing of the submission to AEMO of the audit report of a Market Participant’s Facility Sub-Metering; and
• make minor modifications to paragraph structure, remove redundant text and correct minor grammatical errors.

AEMO is seeking comment and feedback on:

• Whether there are likely to be any unintended issues stemming from the proposed drafting for the Procedure, with particular focus on the proposed amendments to

• accuracy requirements for ‘SCADA’ and ‘Interval Energy Data recorded by a device other than SCADA’ as sources of Facility Sub-Metering;

• differentiated requirements between ‘SCADA’ and ‘Interval Energy Data recorded by a device other than SCADA’ and use of WEMS MPI portal for submission of Facility Sub-Metering data; and

• the timing of submission of audit report to AEMO.

Invitation to Make Submissions

AEMO invites written submissions on this Procedure Change Proposal, including any alternative or additional proposals you consider may improve the procedure/s or better meet the Wholesale Market Objectives in section 122(2) of the Electricity Industry Act 2004 (and clause 1.2.1 of the WEM Rules).

Please identify any parts of your submission that you wish to remain confidential, and explain why. AEMO may still publish that information if it does not consider it to be confidential, but will consult with you before doing so.

When making a claim for confidentiality, AEMO encourages respondents to familiarise themselves with Chapter 10 of the Wholesale Electricity Market Rules, which imposes obligations in respect to the release of documents.

Meetings

Before the closing date for submissions, you may request a meeting with AEMO to discuss the issues and proposed changes raised in the Procedure Change Proposal, stating why you consider a meeting is necessary or desirable.

If appropriate, meetings may be held jointly with other stakeholders. Subject to confidentiality restrictions, AEMO will generally make details of matters discussed at a meeting available to other stakeholders, and may publish those details.

Closing Date and Time

Submissions in response to this Procedure Change Proposal should be sent by email to WA.Marketdevelopment@aemo.com.au, to reach AEMO by 5.00 pm (AWST) on 31 January 2025.

All submissions must be in electronic format (pdf or Microsoft Word). Submissions should use the Procedure Change Submission form available on this page:

AEMO is not obliged to consider submissions received after the closing date and time. Any late submissions should explain the reason for delay and the detriment to you if AEMO does not consider your submission.

Publication

All submissions will be published on AEMO’s website. Confidential information will not be published, other than as specified above.